College of Water Conservancy and Civil Engineering,China Agriculture University,Beijing 100083,China;
State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;
State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;
State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;
Francis turbine; computational fluid dynamics(CFD); fluid-structure interaction(FSI); stress characteristics;